Queuing discord.js bot commands

Question

My bot manages server auctions, so order of commands(bids specifically) is quite important.

The commands do things like requests and DB updates during execution, and I've noticed that if I run two commands at the exact same time they run in 'parallel'(javascript parallel). This can cause some issues during validation(eg. bid price > current highest).

Is there a way to block the thread to complete a command before serving another?

I'm using the approach from the discord.js guide

index.js

const commandFiles = fs.readdirSync(commandsPath).filter(file => file.endsWith('.js'));

for (const file of commandFiles) {
    const filePath = path.join(commandsPath, file);
    const command = require(filePath);
    client.commands.set(command.data.name, command);
}

commands/command.js

const { SlashCommandBuilder } = require('@discordjs/builders');

module.exports = {
    data: new SlashCommandBuilder()
        .setName('<name>')
        .setDescription('<desc>'),
    async execute(interaction) {

        // code, await db calls, etc

    }
}

Thanks.

Answer 1

I implemented a lock on the command execution body using the async-lock npm package.

lock.js

const AsyncLock = require('async-lock');

let lock = new AsyncLock();

module.exports = lock

commands/command.js

const { SlashCommandBuilder } = require('@discordjs/builders');
const lock = require('../lock');

module.exports = {
    data: new SlashCommandBuilder()
        .setName('<name>')
        .setDescription('<desc>'),
    async execute(interaction) {

        lock.acquire("", async (done) => {
            try {
                // code, await db calls, etc
            catch {
                // errors
            } finally {
                done();
            }
        }, () => {});
    }
}

Feedback welcome